Dielectric barrier discharge-induced vortex generation with discharge-actuated boundary layer bleed

Seong Kyun Im, Moon Soo Bak, Mark Godfrey Mungal, Mark A. Cappelli

Research output: Contribution to journalArticle

Abstract

The characteristics of vortices induced by spanwise forcing using a streamwise-oriented dielectric barrier discharge (DBD) vortex generator (VG) are investigated with and without a boundary layer bleed slot, the flow of which is also driven by a DBD actuator. The velocity fields of the induced flows are characterized by ensemble averaged particle image velocimetry. A stronger downward motion and proximity of the induced vortex to the forcing electrode and the wall are observed when the DBD VG is used in conjunction with a DBD-active bleed slot. The effect of varying the applied voltage and freestream velocity on the induced vortex is examined. Researches are carried out on the ability for this DBD VG to control the separation on an inclined flat-plate and diverging ramp. We find that the DBD VG, together with DBD-activated bleed slots, leads to more robust separation control in these adverse pressure gradient configurations.

Original languageEnglish
Article number6584820
Pages (from-to)3245-3253
Number of pages9
JournalIEEE Transactions on Plasma Science
Volume41
Issue number12
DOIs
Publication statusPublished - 2013 Dec
Externally publishedYes

Keywords

  • Flow control
  • Plasma application

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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